Device for increasing draft



(No'ModeL) J. DEM A-NGEOT.

' DEVICE FOR INGREASINGDRAFT. No; 245,143.

' Patented Aug: 2, 1881.

UNITED STATES PATENT OFFICE.

JOHN DEMANGEOT, OF LANCASTER, NEW YORK.

DEVICE. FOR INCREASING DRAFT.

SPECIFICATION forming part of Letters PatentjNo. 245,143, dated August2, 1881. Application filed April s, 1851. (No model.)

To all whom it may concern:

Be it known that I, JOHN DEMANGEOT, a citizen of the United States,residing at Lancaster, in the county of Erie and State of New York,havemade certain Improvements in Devices for Increasing the Draft underGrates, of which the following is a specification.

This invention relates to the arrangement of the exhaus't-steam-feedingpipes in connection with the steam-discharge pipe, (set under thegrate,) the object of such arrangement being to get dry steam as near aspossible, and, by operating it with the ash-pit door open, get acombination of air and steam to improve the draft, blow away theashesfrom the coals to the back of the ash-pit, and improve the burning ofpoor or any fuel, all as hereinafter explain'ed.

In the drawing the figure is a side elevation orview of the device inconnection with a grate and boiler, partly shown.

A represents a portion of one end of a boiler; B, the front ends of thegrate under the same; and O, the single exit steam-pipe, set only a fewinches below the grate and near the front end of the same, and providedwith a series of steam openings or holes, a a a, as many or few asneeded, and as this pipe screws into the elbow-joint b it can be set soas to throw the steam straight or slanting, the latter being preferable,so as to throw it the entire length of the grate.

The steam usually will be the exhaust'from the cylinder D, which will betaken through the main exhaust-pipe E,then by a pipe, G, which runs asfar as required; but instead of being united in a direct line with thesteameseape C under the grate, it is set at right angles by an elbow, c,downward, making a vertical pipe,cl, and, with ajoint or elbow, c,attached to a horizontal pipe, 0, forming the hot- 7 tom of a crook, F.The pipe e-is joined to another elbow,c, then to another vertical pipe,

a, corresponding to d. This is joined to the elbow b. This makes theentire crook F, the object being todrop all the water in the ex- 'pitdoor closed.

haust-stea n and all condensatidns in the pipes into the lower pipe, 0,where it will be drawn off by the faucetf. By this arrangement when thesteam reaches the pipe 0 under the grate it is dry, and is thereforemuch more effective.

When it is desired to shut off the exhaust from the grate a valve, h, inpipe G. is employed, and this is also used to regulate the flow ofsteam, the full force beingused or only a portion, as the draft is lightor strong. The

.valve 9, in the main steam-escape pipeE, is

set above the exhaust-pipe G, so as to shutoff steam above pipe G or toopen and exhaust out into the air when no steam is desired for littlewater gets into pipe 0 is drawn ofi at pipe is. A

I believe, usually, that devices for iinprow ing draft of'grates bysteam are with the ash- Mine is with it open, by which I get thenecessary air to unite with the exhaust-steam.

Of course live steam can be used; but my arrangement is more especiallyadapted for using the exhaust-steam.

I am aware that exhaust-steam has been used for the same purpose; but Ibelieve I am the first so to arrange the conducting'pipes, and inconnection with a single exit-pipe, C, so placed.

I claim- In combination with the single steam-pipe 0, havingperforations a a a, set immediately under the front of grate B, andadjustable by the elbow-joint b, the attached crook, consisting of pipesd (1 e, elbow-joints b c o 0, exhaust-pipe Gr, regulating-valve h, andfaucet f, all arranged and operating substantially as and for thepurpose specified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

- I JOHN DEMANGEOT.

Witnesses:

JOSEPH NUWER, J. R. DRAKE.

the grate B. Then the valve his shut. What

